Home / 28,431.61-39,222.94-16,488.03

Finding the Fourth Proportional to 28,431.61, 39,222.94 and 16,488.03

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Solution

The fourth proportional to 28,431.61, 39,222.94 and 16,488.03 is: 22,746.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,431.61 : 39,222.94 = 16,488.03 : x
  2. Step 2: Convert to fraction form
    28,431.61/39,222.94 = 16,488.03/x
  3. Step 3: Cross multiply
    28,431.61x = 39,222.94 × 16,488.03
  4. Step 4: Simplify right side
    28,431.61x = 646,708,970.19
  5. Step 5: Solve for x
    x = 646,708,970.19/28,431.61
  6. Step 6: Final answer
    x = 22,746.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.